package com.plusjun.gulimall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.plusjun.common.constant.ProductConstant;
import com.plusjun.common.utils.PageUtils;
import com.plusjun.common.utils.Query;
import com.plusjun.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.plusjun.gulimall.product.dao.AttrDao;
import com.plusjun.gulimall.product.dao.AttrGroupDao;
import com.plusjun.gulimall.product.dao.CategoryDao;
import com.plusjun.gulimall.product.entity.*;
import com.plusjun.gulimall.product.service.AttrService;
import com.plusjun.gulimall.product.service.CategoryService;
import com.plusjun.gulimall.product.vo.AttrGroupRelationVO;
import com.plusjun.gulimall.product.vo.AttrRespVO;
import com.plusjun.gulimall.product.vo.AttrVO;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Resource
    AttrAttrgroupRelationDao relationDao;

    @Resource
    AttrGroupDao attrGroupDao;
    @Resource
    CategoryDao categoryDao;
    @Resource
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVO attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        // 1、保存基本数据
        this.save(attrEntity);
        // 2、保存关联关系
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {

            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String attrType) {
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().ne("attr_type",
                "base".equalsIgnoreCase(attrType) ? ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (catelogId != 0) {
            wrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVO> respVos = records.stream().map(attrEntity -> {
            AttrRespVO attrRespVo = new AttrRespVO();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            // 1、设置分类和分组的名字
            if ("base".equals(attrType)) {
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setGroupName(categoryEntity.getName());
            }
            return attrRespVo;
        })
                .collect(Collectors.toList());
        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVO attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        // 更新销售属性表
        this.updateById(attrEntity);

        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //1、修改分组关联
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();

            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count > 0) {

                relationDao.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));

            } else {
                relationDao.insert(relationEntity);
            }
        }
    }

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        // 1、去属性关联关系表中查找出对应的关联属性
        List<AttrAttrgroupRelationEntity> relationEntities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        // 2、获取到 attrId的集合
        List<Long> list = relationEntities.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        // 3、通过attrId查找所有当前属性
        if (list == null || list.size() == 0) {
            return null;
        }
        List<AttrEntity> attrEntities = this.listByIds(list);
        return attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVO[] attrGroupRelationVOS) {
        //relationDao.delete(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attrGroupRelationVo.getAttrId()).eq("attr_group_id",attrGroupRelationVos.getAttrGroupId()));
        // 批量删除
        AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
        List<AttrAttrgroupRelationEntity> list = Arrays.asList(attrGroupRelationVOS).stream().map(item -> {
            BeanUtils.copyProperties(item, attrAttrgroupRelationEntity);
            return attrAttrgroupRelationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(list);
    }

    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        // 1、当前分组只能关联自己算所的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        // 2、当前分组只能关联别的分组没有引用的属性
        // 2.1、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        // 2.2、这些分组翻脸关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        // 2.3、从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds != null && attrIds.size() > 0) {
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            wrapper.eq("attr_id", key).or().like("attr_name", key);
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        return new PageUtils(page);
    }

    @Cacheable(value = "attr",key = "'attrinfo:' + #root.args[0]")
    @Override
    public AttrRespVO getAttrInfo(Long attrId) {
        AttrRespVO attrRespVo = new AttrRespVO();
        // 1、查询到属性基本信息,拷贝到 attrRespVo
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, attrRespVo);
        // 2、通过属性的基本信息查询到所属分类
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            // 设置分组信息
            AttrAttrgroupRelationEntity attrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if (attrgroupRelation != null) {
                attrRespVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
                if (attrGroupEntity != null) {
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }
        // 3、设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        attrRespVo.setCatelogPath(catelogPath);

        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            attrRespVo.setCatelogName(categoryEntity.getName());
        }
        return attrRespVo;
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrList) {
        List<Long> list = this.baseMapper.selectSearchAttrIds(attrList);
        return list;
    }


}